QUESTION 4 Oil and Gas Prices. The average gasoline price per gallon (in cities) and the cost of a barrel of oil are shown for a random selection of weeks from 2009- 2010. Is there a linear relationship between the variables? a = 0.05 Oil ($) 46.25 37.51 78.00 75.39 84.88 73.78 Gasoline ($) 2.197 2.182 2.987 3.015 3.109 3.000 Ho: P = 0